Straightness Measurement
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Procedure for performing straightness measurement Straightness measurements show bending or overall misalignment in the guideways of a machine. This could be the result of wear in these guideways, an accident which may have damaged them, or poor machine foundations that are causing the axis to bow. Straightness error will have a direct effect on the positioning and contouring accuracy of a machine. The laser system measures the machine straightness accuracy and repeatability by moving the machine to a number of target positions and measuring the straightness deviations. These measurements must be repeated for the two measurement planes. e.g. the vertical measurement plane and the horizontal measurement plane when measuring the straightness of a horizontal axis. This section leads you through a practical exercise where you measure the straightness of a linear axis. The steps required to perform a straightness measurement are as follows: St raight ness measurement User guide This manual is available in English only © 2000-2001 Renishaw - 8 August 2001 Issue 5.1 IMPORTANT - please read the SAFETY section before proceeding. Set up the ML10 and the straightness optics. Since straightness deviations are measured in two measurement planes, two sets of measurements need to be taken for each machine axis, using Page 1 of 45 Straightness measurement title page 20/05/2009 file://C:\Documents and Settings\Nospheratu Daemon\Local Settings\Temp\~h h8A6A.htm
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